/*
 * Copyright (C) 2007 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example.android.apis.app;

// Need the following import to get access to the app resources, since this
// class is in a sub-package.
import com.example.android.apis.R;

import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.Service;
import android.content.Intent;
import android.os.Binder;
import android.os.ConditionVariable;
import android.os.IBinder;
import android.os.Parcel;
import android.os.RemoteException;

/**
 * This is an example of service that will update its status bar balloon every 5
 * seconds for a minute.
 * 
 */
public class NotifyingService extends Service {

	// Use a layout id for a unique identifier
	private static int MOOD_NOTIFICATIONS = R.layout.status_bar_notifications;

	// variable which controls the notification thread
	private ConditionVariable mCondition;

	@Override
	public void onCreate() {
		mNM = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);

		// Start up the thread running the service. Note that we create a
		// separate thread because the service normally runs in the process's
		// main thread, which we don't want to block.
		Thread notifyingThread = new Thread(null, mTask, "NotifyingService");
		mCondition = new ConditionVariable(false);
		notifyingThread.start();
	}

	@Override
	public void onDestroy() {
		// Cancel the persistent notification.
		mNM.cancel(MOOD_NOTIFICATIONS);
		// Stop the thread from generating further notifications
		mCondition.open();
	}

	private Runnable mTask = new Runnable() {
		public void run() {
			for (int i = 0; i < 4; ++i) {
				showNotification(R.drawable.stat_happy,
						R.string.status_bar_notifications_happy_message);
				if (mCondition.block(5 * 1000))
					break;
				showNotification(R.drawable.stat_neutral,
						R.string.status_bar_notifications_ok_message);
				if (mCondition.block(5 * 1000))
					break;
				showNotification(R.drawable.stat_sad,
						R.string.status_bar_notifications_sad_message);
				if (mCondition.block(5 * 1000))
					break;
			}
			// Done with our work... stop the service!
			NotifyingService.this.stopSelf();
		}
	};

	@Override
	public IBinder onBind(Intent intent) {
		return mBinder;
	}

	private void showNotification(int moodId, int textId) {
		// In this sample, we'll use the same text for the ticker and the
		// expanded notification
		CharSequence text = getText(textId);

		// Set the icon, scrolling text and timestamp.
		// Note that in this example, we pass null for tickerText. We update the
		// icon enough that
		// it is distracting to show the ticker text every time it changes. We
		// strongly suggest
		// that you do this as well. (Think of of the "New hardware found" or
		// "Network connection
		// changed" messages that always pop up)
		Notification notification = new Notification(moodId, null,
				System.currentTimeMillis());

		// The PendingIntent to launch our activity if the user selects this
		// notification
		PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
				new Intent(this, NotifyingController.class), 0);

		// Set the info for the views that show in the notification panel.
		notification.setLatestEventInfo(this,
				getText(R.string.status_bar_notifications_mood_title), text,
				contentIntent);

		// Send the notification.
		// We use a layout id because it is a unique number. We use it later to
		// cancel.
		mNM.notify(MOOD_NOTIFICATIONS, notification);
	}

	// This is the object that receives interactions from clients. See
	// RemoteService for a more complete example.
	private final IBinder mBinder = new Binder() {
		@Override
		protected boolean onTransact(int code, Parcel data, Parcel reply,
				int flags) throws RemoteException {
			return super.onTransact(code, data, reply, flags);
		}
	};

	private NotificationManager mNM;
}
